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Stockton Unified Schooi District Geological and Environmental Hazards Assessment CSU-Stanislaus,Stockton Campus School Site Page 10 Subsequent to the submittal of Condor's report dated January 11, 2002, a further review of the Department of Water Resources (DWR) records used for the SRS was conducted. The additional review indicated that one of the abandoned water wells, as referenced in the SRS (denoted as Stockton State Hospital Well #2), was installed in 1937 and was located in the general vicinity of the UST site. The `r DWR records showed that Well #2 was eventually abandoned in 1993 and was located approximately 400 feet southwest of an old gas well. The DWR records also indicated an old gas well dating back to 1889, was also located on the former State Insane Asylum parcel. This well produced gas at approximately 2,500 cubic feet per twenty-four hours and water at approximately 90 gallons per minute, according to the DWR records_ DWR records are not available for public viewing and were thus not included in this report. In the January 11, 2002 report, Condor recommended quarterly monitoring of MW-1, MW-2, and MW-3, additional shallow and deep groundwater investigation in the down-gradient direction (east) of the source area, and over-excavation of the former tank site down to the saturated zone at a depth of approximately 38 feet to remove approximately 1,800 cubic yards of hydrocarbon contaminated soil from vadose zone in the source area. In a letter dated April 26, 2002, the SJCEHD concurred with the Condor recommendations regarding quarterly monitoring and additional groundwater investigation but disagreed with the recommendation for soil over-excavation. Instead, the SJCEHD requested that a work plan be submitted describing additional groundwater investigation and that the work plan include a remedial feasibility study that evaluates at least two feasible remedial approaches for the site. Condor is currently preparing the work plan and remedial feasibility study. 3.4 VALUATION REDUCTION FOR ENVIRONMENTAL ISSUES &. No valuation reduction for environmental issues was revealed by the property owner or site manager. 3.5 OWNER,PROPERTY MANAGER,AND OCCUPANT INFORMATION The current property owner of APN 139-210-04 is the State of California. Grupe Commercial Company (Grupe) is the site manager for the State of California. Mr. Patrick Meunier, Mr. Raymond Thatcher, and Ms. Jane Goss of Grupe were interviewed. Mr. Raymond Thatcher and Ms. Jane Goss completed the Site Inspection Questionnaire. w.. 3.6 REASON FOR PERFORMING PHASE I The reason for performing this Phase I ESA and Geological and Environmental Hazards Assessment is to investigate the environmental conditions of the property before improving the site for a proposed elementary school. 3.7 OTHER M None noted. 4.0 RECORDS REVIEW 4.1 STANDARD ENVIRONMENTAL RECORD SOURCES The databases included in the records review are listed in Section 1.2.1.3.More than 80 locations were L identified in the ASTM specified databases within the specified search radii and are included in Appendix_ B. However, it is not practically reviewable to review all identified governmental database files. LW 4M 6W i A CONDOR